Metro 2033

So, I just installed this game on my Windows 8 machine... When I went to start the game, steam began to install a DirectX redistributable package, which was fine... I went away for a minute, and when I came back my TV said that there was no signal from the source.

I have no idea what's gone wrong, and I have no idea how to get in to safe mode with Win8 in this case because AFAIK they messed around with it so that if you want safe mode you gotta specify in the OS before you shutdown... you can't just mash F8 anymore.